Not so often we would end up troubleshooting or manipulating ARP and ARP tables in Sun Solaris. However, following are some of the useful commands which can help when required. The following commands will help you display,modify,add,delete ARP entries in Sun Solaris ARP table.

You can also read static entries from a file. This can come handy if you decide that all ARP entries are static and no ARP requests are sent and received from the system. You can add the static entries onto a file and add the arp command onto the network init scripts in /etc/rc2.d/

To read from file

sunsolaris# arp -f /etc/host_mac

where /etc/host_mac is my file name from where the ARP entries are read.